CN101362230B - External-gearing honing cylindrical gear machine-tool and method - Google Patents

Abstract

The invention discloses a machine tool of an external gearing honing cylindrical gear, and a method, aiming at overcoming the problem of the difficulty to improve the precision for processing gears. The machine tool consists of a first gear, a second honing gear, an active loading gear, NO.1 and NO.2 passive loading gears, a workpiece shaft, a first honing shaft and a second honing shaft. The first honing shaft and the second honing shaft are parallel to each other and are installed on a case by a bearing horizontally or vertically; the workpiece shaft is positioned between the two honing shafts and forms a cut angle of Psi with the two honing shafts. The first and the second honing gears are respectively fixed and installed at the left ends of the first and the second honing shafts; the active loading gear, the NO.1 and the NO.2 passive loading gears are respectively installed on the workpiece shaft, and the right ends of the first and the second honing shafts; the processed gear installed at the left end of the workpiece shaft is meshed with the first and the second honing gears; the active loading gear is meshed with the NO.1 and the NO.2 passive loading gears. The method comprises two main procedures of debugging the machine tool and dressing the honing gear, and honing the processed gears. The machine tool is a special machine tool for accurately processing cylinder hardening gears in batch or mass production.

Description

The lathe of external-gearing honing cylindrical gear and method

Technical field

The present invention relates to the accurately machined apparatus and method for of a kind of involute cylindrical gear, more particularly, it relates to a kind of lathe and method of external-gearing honing cylindrical gear.

Background technology

Gear honing is that quenching hard gear is carried out accurately machined a kind of method, cuts by the top gem of a girdle-pendant wheel that contains abrasive material and by the pressure between top gem of a girdle-pendant gear teeth face and relative sliding. Prevailing be beyond mesh form, in " freely meshing " process, process. Have that cost is low, the simple outstanding advantages of equipment, but correct the error poor ability, be difficult to improve the Gear Processing precision. Employing has the plover mill machine of forcing driving-chain, can overcome above-mentioned shortcoming, as the Fa Xier of Switzerland (

), the engagement gear honing machine corrects that the error ability is strong, high productivity in the numerical control of Lai Senhaoer (Reishaur), superior performance, but the engagement honing wheel carries out honing work in adopting, and lathe need adopt large-scale precision bearing and multi-axis linkage numerical control system, and lathe is made more complicated and expensive.

Summary of the invention

Technical problem to be solved by this invention is to have overcome the problem that prior art exists, provide a kind of gear teeth that have after the honing of forcing driving-chain to have high-quality, high efficiency, and the lathe of the lower external-gearing honing cylindrical gear with two honing wheels of lathe cost. Simultaneously also provide a kind of quenching hard gear is carried out the honing method for finishing manufactured.

For solving the problems of the technologies described above, the present invention has adopted following technical scheme to realize: the lathe of external-gearing honing cylindrical gear, include casing, electrical control cabinet, initiatively loads gear, No. 1 passive loading gear, No. 2 passive loading gears, workpiece spindle, the first honing axle and the second honing axles at the first honing wheel, the second honing wheel.

The first honing axle is parallel with the second honing axle, and by the bearing level or vertically be installed on the casing, wheelbase is A=A₁+A ₂, workpiece spindle is between the first honing axle, the second honing axle, and with the first honing axle, the second honing shaft space angle of cut is

, the projection line of workpiece spindle on the first honing axle and the determined plane of the second honing axle and the first honing axle, the second honing axle are parallel, and the between centers beeline of workpiece spindle and the first honing axle, the second honing axle is respectively A₁、A ₂，A ₁And A₂Equate or do not wait.

The first honing wheel, the second honing wheel are fixedly mounted on respectively the left end of the first honing axle, the second honing axle, initiatively load the right-hand member that gear, No. 1 passive loading gear, No. 2 passive loading gears are installed in respectively workpiece spindle, the first honing axle, the second honing axle, the left end of workpiece spindle is used for installing processed gear, processed gear is meshed with the first honing wheel, the second honing wheel, initiatively load gear and be meshed with No. 1 passive loading gear, No. 2 passive loading gears, and consisted of 13 region of engagements, 14 region of engagements, 25 region of engagements, 26 region of engagements. The end of the second honing axle of the end of the first honing axle of No. 1 passive loading gear of installation, No. 2 passive loading gears of installation or the end of workpiece spindle are connected with motor. Namely form first set technical scheme and the second cover technical scheme.

The wheelbase that is parallel to each other described in the first set technical scheme is A=A₁+A ₂The first honing axle and the second honing axle, also can take with horizontal plane angle as

The orientation be installed on the casing, the workpiece spindle that is between the first honing axle and the second honing axle flatly is installed on the casing by bearing, the projection line of workpiece spindle on the first honing axle and the determined plane of the second honing axle and the first honing axle, the second honing axle are parallel, and the between centers beeline of workpiece spindle and the first honing axle, the second honing axle is respectively A₁、A ₂，A ₁And A₂Equate or do not wait. Namely form the 3rd cover technical scheme.

The first honing wheel described in first, second and third technical scheme, the second honing wheel, No. 1 passive loading gear and No. 2 passive loading gears are angular wheel, the small end of the small end of the first honing wheel, the second honing wheel and No. 1 passive loading gear, No. 2 passive loading gears relatively is installed in the two ends of the first honing axle, the second honing axle, and honing wheel tooth top and tooth root circular cone vertex of a cone half-angle are:

Tip cone vertex of a cone half-angle ${\mathrm{\δ}}_e={\mathrm{tg}}^{-1}\left[\frac{R_e-\sqrt{{(\sqrt{{R_e}^2-{R_b}^2}-B_0\mathrm{Sin\ψ})}^2+{R_b}^2}}{B_0}\right]$

Tooth root circular cone vertex of a cone half-angle ${\mathrm{\δ}}_i={\mathrm{tg}}^{-1}\left[\frac{\sqrt{{(\sqrt{{R_i}^2-{R_b}^2}-B_0\mathrm{Sin\ψ})}^2+{R_b}^2}-R_i}{B_0}\right]$

In the formula, R_e. the tip circle radius of honing wheel, R_i. the root radius of honing wheel, R_b. the base radius of honing wheel, B₀. the honing wheel facewidth. What initiatively load the gear employing is that what namely adopt is that the gear teeth two lateral tooth flanks are respectively the opposite spiral involute surface of rotation direction along the spur gear of gear width for the change transverse tooth thickness, and helical angle is got very little value, β_b2=0.5 °～1 °, No. 1 passive loading gear that is meshed with it, the helical angle of No. 2 passive loading gears are respectively left-handed or dextrorotation, and size equals ψ-β_b2 Processed gear with initiatively load gear, the first honing wheel and No. 1 passive loading gear, the relation between the second honing wheel and No. 2 passive loading gears is: Z₁＝Z ₂、R _b1＝R _b2，Z ₃＝Z ₅、R _b3＝R _b5，Z ₄＝Z ₆、R _b4＝R _b6，A ₁＝R _b1+R _b3＝R _b2+R _b5，A ₂＝R _b1+R _b4＝R _b2+R _b6，β _b3＝ψ±β _b1、β _b4＝ψ+β _b1、β _b5＝ψ±β _b2、β _b6＝ψ+β _b2, wherein: Z₁. the number of teeth of processed gear, Z₂. initiatively load the number of teeth of gear, Z₃. the number of teeth of the first honing wheel, Z₄. the number of teeth of the second honing wheel, Z₅.1 the number of teeth of number passive loading gear, Z₆.2 the number of teeth of number passive loading gear, R_b1. the base radius of processed gear, R_b2. initiatively load the base radius of gear, R_b3. the base radius of the first honing wheel, R_b4. the base radius of the second honing wheel, R_b5.1 the base radius of number passive loading gear, R_b6.2 the base radius of number passive loading gear, β_b1. the Base spiral angle of processed gear, β_b2. initiatively load the Base spiral angle of gear, β_b3. the Base spiral angle of the first honing wheel, β_b4. the Base spiral angle of the second honing wheel, β_b5.1 the Base spiral angle of number passive loading gear, β_b6.2 the Base spiral angle of number passive loading gear; Describedly initiatively load gear and slip ring is slidingly connected at axle head by means of feather key, slip ring with initiatively load the gear right side and contact, initiatively load gear and slip ring endoporus featherway and be close to and tighten up with screw with feather key both sides working face respectively. Described the second honing wheel is to adopt the conical surface elastic ring of can circumference adjusting phase place to be fixedly connected on the left end of the second honing axle; The first honing wheel described in first, second and third technical scheme and the second honing wheel adopt alumina abrasive, the resinoid bond that can repair to make, gear teeth working face is involute helicoid, perhaps adopt hardened steel to make the first honing wheel and the second honing wheel, gear teeth working flank is for adopting the coating surface CBN behind the gear grinder accurate grinding.

The method of the lathe fine finishining roller gear of described employing external-gearing honing cylindrical gear may further comprise the steps:

1) debugging lathe and finishing honing wheel

(1) unclamps on the second honing axle with hard-wired the second honing wheel of elastic ring, left end at workpiece spindle is installed diamond dressing wheel, rotate the second honing axle and make diamond dressing wheel and the first honing wheel, make No. 1 passive loading gear and initiatively load gear, the crack that all disappears between the flank of tooth that initiatively loads gear and No. 2 passive loading gears is contacted, rotate again the gap that the second honing wheel eliminates with diamond dressing wheel and then tighten up the second honing wheel.

(2) start lathe and make initiatively the loaded teeth wheel shaft to mobile load trim the first honing wheel and the second honing wheel, repair completely, unload also shutdown, unload diamond dressing wheel.

2) the processed gear of honing

(1) processed gear is installed in the left end of workpiece spindle, the shaft shoulder of its end face and workpiece spindle is close to, then move axially and initiatively load gear and load, make the processed gear bilateral flank of tooth and the first honing wheel and be connected the honing wheel contact and be connected, namely reach processed gear two lateral tooth flank honing surplus states of equalization, fastening processed gear.

(2) adjust lathe and determine the honing speed v₀

By formula $v_0=\frac{R_{b0}{\mathrm{\&omega;}}_0}{\cos {\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="b"\; filenames="H2008100511834E00012.png"\; state="\{\{state\}\}">b</figure-callout>}1}}\sin \mathrm{\&psi;}$ Adjust,

In the formula: R_b0. honing wheel base radius, ω₀. honing wheel angle of revolution speed, β_b1. processed rolling circle helical angle, ψ. desirable 10 °-15 °.

(3) then start shooting, load until remove the honing surplus, manufactured processed gear is shut down and is unloaded in unloading thereupon, enters the next working cycles that repeats above-mentioned steps.

Honing wheel base radius R described in the method and technology scheme_b0With honing wheel angle of revolution speed omega₀Choose, when the base radius of the first honing wheel equals the base radius of the second honing wheel, i.e. R_b3＝R _b4The time, ω₃＝ω ₄, wherein, ω₃. the angle of revolution speed of the first honing wheel, ω₄. the angle of revolution speed of the second honing wheel. When the base radius of the first honing wheel is not equal to the base radius of the second honing wheel, i.e. R_b3≠R _b4The time, ω₃≠ω ₄。

Compared with prior art the invention has the beneficial effects as follows:

1. adopt the lathe of external-gearing honing cylindrical gear of the present invention, geometry and the precision of the gear teeth of processed gear depend primarily on diamond dressing wheel, the gear teeth of processed gear namely are (clone) duplicate of diamond dressing wheel " clone ", all can be implemented by diamond dressing wheel so all axial modifications comprise profile of tooth (tooth top or tooth root finishing, profile of tooth cydariform), teeth directional (barreled tooth flank, asymmetric tooth, tapering tooth, cydariform tapering tooth), topology (distortion tooth). The similar Switzerland of this performance Reishauer RZP anchor ring roll flute, processed gear copies by freeing wheel fully;

2. the machine tool motion of external-gearing honing cylindrical gear of the present invention is extremely simple, contrast Switzerland FThe engagement gear honing machine need not the multi-axis linkage numerical control device, need not large-scale precision bearing in the ssler, Reishauer RZR, CNC, Machine Tool design, makes simply, and cost significantly reduces;

3. adopt the machine tooling plate-like gear of external-gearing honing cylindrical gear of the present invention to need not to wear mandrel, need not axial feed, more be conducive to enhance productivity;

4. the lathe worker rate of doing work of external-gearing honing cylindrical gear of the present invention sealing, energy-conservation;

5. the lathe volume of external-gearing honing cylindrical gear of the present invention is little, occupation of land is few;

The lathe of external-gearing honing cylindrical gear of the present invention be exclusively used in batch, the fine finishining of a large amount of production plate-like quenching hard gears.

Description of drawings

The present invention is further illustrated below in conjunction with accompanying drawing:

Fig. 1 is intersecting axle straight line contact conjugate tooth profiles geometrical relationship figure;

Fig. 2 is the structural principle schematic diagram of lathe of the external-gearing honing cylindrical gear of two honing wheels;

Fig. 3-a) is the front view of honing wheel and processed gear meshing relation;

Fig. 3-b) is the top view of honing wheel and processed gear meshing relation;

Fig. 4 is active loaded teeth wheel construction and gap-eliminating structure schematic diagram;

Fig. 5 is the structural representation of lathe of the external-gearing honing cylindrical gear of horizontal two honing wheels;

Among the figure: 1. processed gear 2. initiatively loads gear, 3. the first honing wheel, 4. the second honing wheel, 5.1 number passive loading gear, No. 6.2 passive loading gears, 7. slip rings, 8. screw, 9. feather key, 10. casing, 11. motor, 12. slide plates, 13. screw rods, 14. nut, 15. lathe beds, I. workpiece spindle, II. the first honing axle, III. the second honing axle, Z₁. the number of teeth of processed gear, Z₂. initiatively load the number of teeth of gear, Z₃. the number of teeth of the first honing wheel, Z₄. the number of teeth of the second honing wheel, Z₅.1 the number of teeth of number passive loading gear, Z₆.2 the number of teeth of number passive loading gear, R_b1. the base radius of processed gear, R_b2. initiatively load the base radius of gear, R_b3. the base radius of the first honing wheel, R_b4. the base radius of the second honing wheel, R_b5.1 the base radius of number passive loading gear, R_b6.2 the base radius of number passive loading gear, β_b1. the Base spiral angle of processed gear, β_b2. initiatively load the Base spiral angle of gear, β_b3. the Base spiral angle of the first honing wheel, β_b4. the Base spiral angle of the second honing wheel, β_b5.1 the Base spiral angle of number passive loading gear, β_b6.2 the Base spiral angle of number passive loading gear, region of engagement a.13, region of engagement b.14, region of engagement c.25, region of engagement d.26, the facewidth of the processed gear of b., B₃. the facewidth of the first honing wheel,. crossed axis angle, Q. internal common tangent plane, A₁. the between centers beeline of workpiece spindle and the first honing axle, A₂. the between centers beeline of workpiece spindle the second honing axle.

The specific embodiment

Below in conjunction with accompanying drawing the present invention is explained in detail:

The lathe of two honing wheel external-gearing honing cylindrical gears is a kind of a kind of fine finishining honing equipment that is applicable in a large number or produces by batch involute cylindrical gear of special use. Lathe is workpiece spindle I, the first honing axle II, the second honing axle III by lathe bed 15, casing 10, three axles, namely the first honing wheel 3,4, one of the second honing wheels initiatively load gear 2 to two honing wheels, namely No. 1 passive loading gear 5, No. 2 passive loading gears 6 form two passive loading gears. Before the fine finishining roller gear, at first adopt diamond dressing wheel on the lathe of the external-gearing honing cylindrical gear of of the present invention pair of honing wheel, two honing wheels to be repaired, then, adopt again the lathe of of the present invention pair of honing wheel external-gearing honing cylindrical gear that processed gear is processed. Processed gear namely is that diamond dressing wheel " clone " copies thus. The lathe of the external-gearing honing cylindrical gear of of the present invention pair of honing wheel can be finished the correction of the flank shape of all gear teeth flank of tooth, and machine tool motion is extremely simple, easy to manufacture, cheap. Two honing wheels contact with straight line with processed gear respective side respectively and carry out flank of tooth honing, and production efficiency is high.

Major technique design of the present invention is to determine honing wheel gear teeth working surface by intersecting axle straight line contact conjugate tooth profiles; The be placed in wheel shaft of the wheel shaft of a pair of honing wheel of processed gear tooth both sides and processed gear of employing consists of the transmission that angle is the space crossed axle of ψ but opposite direction; Have the public tangent plane Q of base cylinder between processed gear and honing wheel, two honing wheels carry out honing processing to processed gear tooth both sides with the line way of contact simultaneously, and honing wheel equates with processed gear Normal base pitch.

1. specify and press determining of intersecting axle straight line contact conjugate tooth profiles geometrical relationship, with processing dextrorotation gear teeth face ∑₁Be example:

Consult Fig. 1, the wheel shaft of two gears is space crossed through-drive, ∑₁Be the processed gear dextrorotation involute helicoid flank of tooth, ∑₃First is the honing wheel working flank, and two rolling circle posts have internal common tangent plane Q, and the generation line ML on the Q face is R by the base cylinder radius_b1Processed gear 1 launch flank of tooth ∑₁，∑ ₁For Base spiral angle equals β_b1The dextrorotation involute helicoid; ML is R by the base cylinder radius_b3Honing wheel 3 launch flank of tooth ∑s₃，∑ ₃For Base spiral angle equals β_b3Left-handed involute helicoid, be to be the honing wheel working flank, but β_b3≠β _b1。∑ ₁、∑ ₃The tangent contact of two flank of tooth keeps the luer engages with primary condition at straight edge line ML, and two gear Normal base pitch equate that two flank of tooth can reach correct engagement. At this moment, crossed axis angle ψ=β between diaxon_b1-β _b3, two between centers centre-to-centre spacing A₁＝R _b1+R _b3。

2. specify layout, structure and the geometrical relationship of a pair of honing wheel and the loading gear of the processed gear tooth both sides that are placed in:

Consult Fig. 2, wheelbase is A=A₁+A ₂Workpiece spindle I is between the first honing axle II and the second honing axle III, workpiece spindle I is a straight line parallel with the second honing axle III with the first honing axle II at the first honing axle II axle with projection line on the determined plane of the second honing axle III, workpiece spindle I and the first honing axle II, the second honing axle III Special composition intersecting axle, angle is

, the between centers beeline of workpiece spindle I and the first honing axle II, the second honing axle III is respectively A₁、A ₂，A ₁And A₂Can equate also can not wait; The the first honing axle II that perhaps is parallel to each other and the second honing axle III, take with the face horizontal plane angle as

The orientation be installed on the casing 10. Workpiece spindle I still is between the first honing axle II and the second honing axle III, flatly is installed on the casing 10, so, workpiece spindle I and the first honing axle II, the second honing axle III Special composition intersecting axle, angle is

Certainly, the first honing axle II is parallel with the second honing axle III, vertically being installed on the casing by bearing, also can be that workpiece spindle I vertically is installed on the casing by bearing, workpiece spindle I with by the first parallel honing axle II and the determined plane included angle of the second honing axle III be

Can form quadruplet technical scheme in fact altogether. No matter a sort of mode workpiece spindle I left side (on) the processed gear 1 of end installation, right (descend) end is installed with feather key and is connected and can initiatively load gear 2 what workpiece spindle I right (descending) hold axial slip, the first honing axle II left (on) end is equipped with the first honing wheel 3, right (descending) end is equipped with passive loading gear 5 No. 1, they all are fixedly connected with the first honing axle II, the second honing axle III left (on) end is equipped with the second honing wheel 4, the second honing wheel 4 and the second honing axle III left (on) end adopts conical surface elastic ring to be connected, tighten up after can adjusting phase place in circumference range, the second honing axle III right (descending) end is installed with passive loading gear 6 No. 2 again; The first honing wheel 3, the second honing wheel 4 and 1, No. 1 passive loading gear 5 of processed gear, No. 2 passive loading gears 6 and initiatively load gear 2 and consisted of 13 region of engagement a, 14 region of engagement b, 25 region of engagement c and 26 region of engagement d. The end of the first honing axle II of No. 1 passive loading gear 5 or the end that the second honing axle III of No. 2 passive loading gears 6 is installed are installed to be connected with power source. The first honing wheel 3, the second honing wheel 4, No. 1 passive loading gear 5 and No. 2 passive loading gears 6 are angular wheel, the small end of the small end of the first honing wheel 3, the second honing wheel 4 and No. 1 passive loading gear 5, No. 2 passive loading gears 6 relatively is installed in the two ends of the first honing axle II, the second honing axle III, and honing wheel tooth top and tooth root circular cone vertex of a cone half-angle are:

Tip cone vertex of a cone half-angle ${\mathrm{\&delta;}}_e={\mathrm{tg}}^{-1}\left[\frac{R_e-\sqrt{{(\sqrt{{R_e}^2-{R_b}^2}-B_0\mathrm{Sin\&psi;})}^2+{R_b}^2}}{B_0}\right]$

Tooth root circular cone vertex of a cone half-angle ${\mathrm{\&delta;}}_i={\mathrm{tg}}^{-1}\left[\frac{\sqrt{{(\sqrt{{R_i}^2-{R_b}^2}-B_0\mathrm{Sin\&psi;})}^2+{R_b}^2}-R_i}{B_0}\right]$

In the formula, R_e. the tip circle radius of honing wheel, R_i. the root radius of honing wheel, R_b. the base radius of honing wheel, B₀. the honing wheel facewidth;

Consult Fig. 2 and Fig. 3, workpiece spindle I, the first honing axle II and two region of engagements of the second honing axle III left end are 13 region of engagement a and 14 region of engagement b, and the meshing relation of the first honing wheel 3, the second honing wheel 4 and processed gear 1 launches to be plotted in Fig. 3. Fig. 3-a) represented that workpiece spindle I, the first honing axle II, the second honing axle III are parallel to rolling circle post section Q simultaneously wherein, the Q face is the diagram paper, and the second honing axle III turns over 180 ° 14 region of engagement b and 13 region of engagement a are shown in processed gear 1 the same side; Fig. 3-b) is the downward projection figure of Fig. 3-a), because the Q face is the internal common tangent plane of processed gear 1 and honing wheel base cylinder, has reflected that the angle of workpiece spindle I, the first honing axle II is ψ in Fig. 3-a)₁, the angle of workpiece spindle I, the second honing axle III is ψ₂And 13 region of engagement a, 14 region of engagement b. It is consistent with left end with the situation of 25 region of engagement c, the 26 region of engagement d of No. 1 passive loading gear 5, No. 2 passive loading gear 6 formation that right-hand member initiatively loads gear 2. 13 region of engagement a described in the present invention, 14 region of engagement b, 25 region of engagement c, four region of engagements of 26 region of engagement d are crossed axis angle and equal

The flank of tooth is pressed the intersecting axle transmission of straight line contact. Processed gear 1 with the relation that initiatively loads between gear 2, the first honing wheels 3 and No. 1 passive loading gear 5, the second honing wheel 4 and No. 2 passive loading gears 6 is: Z₁＝Z ₂、R _b1＝R _b2，Z ₃＝Z ₅、R _b3＝R _b5，Z ₄＝Z ₆、R _b4＝R _b6，A ₁＝R _b1+R _b3＝R _b2+R _b5，A ₂＝R _b1+R _b4＝R _b2+R _b6，β _b3＝ψ±β _b1、β _b4＝ψ+β _b1、β _b5＝ψ±β _b2、β _b6＝ψ+β _b2。

Satisfying under the above-mentioned condition, torque is inputted all so that the first honing axle II, the second honing axle III turn round in the same way with any axle, and workpiece spindle I reverse rotation. When the honing wheel width B₀>b+2(ρ _max-ρ _min) during tg ψ, wherein, the processed gear tooth width of b., ρ_max. processed gear teeth tips involute radius of curvature, ρ_min. processed involute starting point radius of curvature, the gear honing wheel need not axial feed, has not only improved the efficient of gear honing but also simplified motion and the structure of gear honing lathe.

Calculate honing speed $v_0=\frac{R_{b0}{\mathrm{\&omega;}}_0}{\cos {\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="b"\; filenames="H2008100511834E00012.png"\; state="\{\{state\}\}">b</figure-callout>}1}}\sin \mathrm{\&psi;}$

In the formula: R_b0. honing wheel base radius (generally speaking, uncertain finger is the first honing wheel 3 or the second honing wheel 4), ω₀. honing wheel angle of revolution speed, β_b1. processed rolling circle helical angle, ψ. desirable 10 °-15 °. Described honing wheel base radius R_b0With honing wheel angle of revolution speed omega₀Choose, as the base radius R of the first honing wheel_b3Equal the base radius R of the second honing wheel_b4The time, minute two kinds of situations, 1) R_b1＝R _b3＝R _b4，ω ₁＝ω ₃＝ω ₄，2)R _b3＝R _b4≠R _b1，ω ₃＝ω ₄≠ω ₁ Base radius R when the first honing wheel_b3The base radius R that is not equal to the second honing wheel_b4The time, minute three kinds of situations, 1) R_b1≠R _b3≠R _b4The time, ω₁≠ω ₃≠ω ₄，2)R _b3≠R _b4，R _b1＝R _b3The time, ω₃≠ω ₄，ω ₁＝ω ₃，3)R _b3≠R _b4，R _b1＝R _b4The time, ω₃≠ω ₄，ω ₁＝ω ₄, wherein, ω₃. the angle of revolution speed of the first honing wheel, ω₄. the angle of revolution speed of the second honing wheel, ω₁. the angle of revolution speed of processed gear, R_b1. the base radius of processed gear.

Consult Fig. 2 and Fig. 4, the right-hand member of workpiece spindle I, the first honing axle II and the second honing axle III is loading section. The right-hand member loading section is by initiatively loading gear 2 and No. 1 passive loading gear 5, No. 2 passive loading gears 6 form, the engagement complete class is same as left end, processed gear 1 and initiatively load gear 2, the first honing wheel 3 and No. 1 passive loading gear 5, the second honing wheel 4 and No. 2 passive loading gears 6 correspondence one by one, but different is initiatively to load gear 2 to adopt the spur gear that becomes transverse tooth thickness, be that gear two lateral tooth flanks are respectively the opposite spiral involute surface of rotation direction, helical angle is got very little value, such as β_b2=0.5 °～1 °, the helical angle of corresponding No. 1 passive loading gear 5, No. 2 passive loading gears 6 is respectively left-handed or dextrorotation, equals ψ-β_b2 Structurally, initiatively loading gear 2 can endwisely slip at workpiece spindle I, initiatively loading endwisely slipping of gear 2 can realize by cam mechanism, hydraulic pressure shift fork or screw thread transmission, initiatively load the keyway of gear 2 endoporus and the gap between feather key then by with initiatively load gear 2 can fastening all-in-one-piece slip ring 7 and its circumference dislocation elimination. When unclamping screw 8, so that initiatively load gear 2 and slip ring 7 inner hole key slots are close to feather key 9 both sides working faces respectively, then clamp-screw 8 gets final product. Initiatively load the facewidth B of gear 2₂Strengthen, satisfy to move axially not producing drop out of gear when loading. Owing to initiatively loading the spur gear that gear 2 is transverse tooth thickness variation, when it moves axially Δ 1 along workpiece spindle I, (direction is that the large end of transverse tooth thickness points to the transverse tooth thickness small end), to force No. 1 passive loading gear 5, No. 2 passive loading gears 6 to add round about separately revolution Δ φ and eliminate gradually each meshing wheel backlash, and then contact Tooth is loaded, the processed gear 1 bilateral flank of tooth of left end is subject to the loading of the first top gem of a girdle-pendant honing wheel 3 and the second honing wheel 4 simultaneously. As being in the situation of input torque this moment, will carry out the honing processing to processed gear 1 flank of tooth. Otherwise, oppositely move axially (direction is pointed to the large end of transverse tooth thickness from the transverse tooth thickness small end) as initiatively loading gear 2, will realize unloading. As aforementioned, get β_b2=0.5 °～1 °, move axially Δ 1 along workpiece spindle I and be 10mm, be equivalent to along processed rolling circle tangential direction feeding 0.087～0.175mm. This loading, uninstall process all can carry out in static (each axle does not rotate), dynamic (flank of tooth honing is carried out in each axle rotation) situation. When the rotary motive power source is inputted from workpiece spindle I, forming two cover power circulation around circuits between workpiece spindle I, the first honing axle II and between workpiece spindle I, the second honing axle III.

In order to improve the loading section life-span, initiatively load gear 2, No. 1 passive loading gear 5, No. 2 good steel of passive loading gears 6 requirement employing wearabilities, adopt the technical measures such as quenching and even wear-resistant coating.

Design, calculating initiatively load the major parameter of gear 2, the first honing wheel 3, the second honing wheel 4, No. 1 passive loading gear 5 and No. 2 passive loading gears 6, and its step is as follows:

Common processed gear 1 given normal module is m_n, the normal direction pressure angle of graduated circle is α_n, tooth number Z₁, spiral angle of graduated circle is β₁And rotation direction, the facewidth are major parameter and the crossed axis angles such as b

Value.

1. the calculating parameter of processed gear 1

1) Base spiral angle β_b1＝sin ^-1(sinβ ₁conα _n)

2) transverse module $m_t=\frac{m_n}{\cos {\mathrm{\&beta;}}_1}$

3) end face pressure angle of graduated circle ${\mathrm{\&alpha;}}_t={\sin }^{-1}\left(\frac{{\sin \mathrm{\&alpha;}}_n}{{\mathrm{con\&beta;}}_{b1}}\right)$

4) base radius $R_b$ $1_{}=\frac{Z_1{m}_t{\cos \mathrm{\&alpha;}}_{\mathrm{<figure-callout\; id="2"\; label="t"\; filenames="H2008100511834E00012.png,H2008100511834E00022.png"\; state="\{\{state\}\}">t</figure-callout>}}}{2}$

5) Normal base pitch ρ_n＝πm _ncosα _n。

2. design, calculating initiatively load the major parameter of gear 2

The number of teeth that initiatively loads gear 2 is Z₂, base radius R_b2, must with the base radius R of processed gear 1_b1Equate that therefore, the transverse parameters that initiatively loads gear 2 all equates with the transverse parameters of processed gear 1, the gear teeth two lateral tooth flank Base spiral angle β_b2Opposite direction, size need to set desirable β_b2＝0.5°-1°。

1) normal module $m_n$ $2_{}=\frac{m_n{\cos \mathrm{\&alpha;}}_n}{{\cos \mathrm{\&alpha;}}_t}$

2) normal direction pressure angle of graduated circle α_n2＝sin ^-1(sinα _tcosβ _b2)

3) spiral angle of graduated circle ${\mathrm{\&beta;}}_2={\cos }^{-1}\left(\frac{\mathrm{tg}{\mathrm{\&alpha;}}_{\mathrm{<figure-callout\; id="2"\; label="n"\; filenames="H2008100511834E00012.png,H2008100511834E00022.png"\; state="\{\{state\}\}">n</figure-callout>}2}}{\mathrm{tg}{\mathrm{\&alpha;}}_t}\right)$

4) Normal base pitch p_n2＝πm _n2cosα _n2

5) facewidth B₂Need to satisfy and move axially the not basic demand of drop out of gear.

3. the major parameter of design, calculating the first honing wheel 3

The gear teeth one lateral tooth flank joggleword of the first honing wheel 3 and processed gear 1, its m_n3、α _n3、p _n3All with the m of processed gear 1_n2、α _n2、p _n2Identical.

1) tooth number Z₃

Tooth number Z₃Must choose the tooth number Z with processed gear 1₁Without common factor, tooth number Z₃Many, the life-span of the first honing wheel 3 is high and the engagement registration is large, and consequent leveling effect is conducive to improve the honing precision, but machine tool structure becomes large.

2) Base spiral angle

3) spiral angle of graduated circle ${\mathrm{\&beta;}}_3={\sin }^{-1}\left(\frac{\sin {\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="3"\; label="b"\; filenames="H2008100511834E00012.png,H2008100511834E00031.png"\; state="\{\{state\}\}">b</figure-callout>}3}}{\cos {\mathrm{\&alpha;}}_n}\right)$

4) transverse module $m_t$ $3_{}=\frac{m_n}{\cos {\mathrm{\&beta;}}_3}$

5) end face pressure angle of graduated circle ${\mathrm{\&alpha;}}_{\mathrm{<figure-callout\; id="3"\; label="t"\; filenames="H2008100511834E00012.png,H2008100511834E00031.png"\; state="\{\{state\}\}">t</figure-callout>}3}={\sin }^{-1}\left(\frac{\sin {\mathrm{\&alpha;}}_n}{\cos {\mathrm{\&beta;}}_{b3}}\right)$

6) reference radius $R_{}$ ${}_3=\frac{Z_3{m}_{\mathrm{<figure-callout\; id="3"\; label="t"\; filenames="H2008100511834E00012.png,H2008100511834E00031.png"\; state="\{\{state\}\}">t</figure-callout>}3}}{2}$

7) base radius $R_b$ $3_{}=\frac{Z_3{m}_{\mathrm{<figure-callout\; id="3"\; label="t"\; filenames="H2008100511834E00012.png,H2008100511834E00031.png"\; state="\{\{state\}\}">t</figure-callout>}3}}{2}\cos {\mathrm{\&alpha;}}_{\mathrm{<figure-callout\; id="3"\; label="t"\; filenames="H2008100511834E00012.png,H2008100511834E00031.png"\; state="\{\{state\}\}">t</figure-callout>}3}$

8) the first honing wheel 3 facewidth

4. the major parameter of design, calculating the second honing wheel 4

The design of the second honing wheel 4, calculate basically unanimously with the first honing wheel 3 steps, different is:

1) tooth number Z of the second honing wheel 4₄Determine the tooth number Z of principle and the first honing wheel 3₃Determine that principle is identical, but can be not equal to Z₃ Purpose is to make the first honing wheel 3 big or small near consistent with the second honing wheel 4.

2) Base spiral angle β_b4＝ψ+β _b1

All the other steps are by the calculating of the first honing wheel 3.

5. the major parameter of design, No. 1 passive loading gear 5 of calculating

No. 1 passive loading gear 5 with initiatively load gear 2 jogglewords, coaxial with the first honing wheel 3, require Z₅＝Z ₃、R _b5＝R _b3、p _n5＝p _n2, and make m_n5＝m _n2、α _n5＝α _n2、B ₅＝B ₃。

1) Base spiral angle

2) cyclotomy helical angle ${\mathrm{\&beta;}}_5={\sin }^{-1}\left(\frac{\sin {\mathrm{\&beta;}}_{b5}}{\cos {\mathrm{\&alpha;}}_{n2}}\right)$

3) transverse module $m_{t5}=\frac{m_{n2}}{\cos {\mathrm{\&beta;}}_5}$

4) end face pressure angle of graduated circle ${\mathrm{\&alpha;}}_{t5}={\sin }^{-1}\left(\frac{\sin {\mathrm{\&alpha;}}_{\mathrm{<figure-callout\; id="2"\; label="n"\; filenames="H2008100511834E00012.png,H2008100511834E00022.png"\; state="\{\{state\}\}">n</figure-callout>}2}}{\cos {\mathrm{\&beta;}}_{b5}}\right)$

5) reference radius $R_5=\frac{Z_5{m}_{t5}}{2}$

6. the major parameter of design, No. 2 passive loading gears 6 of calculating

No. 2 passive loading gears 6 with initiatively load gear 2 jogglewords, coaxial with the second honing wheel 4, require Z₆＝z ₄、R _b6＝R _b4、p _n6＝p _n2, and make m_n6＝m _n2、α _n6＝α _n2、B ₆＝B ₃。

Base spiral angle β_b6＝ψ+β _b2，

All the other steps are pressed the calculating of No. 1 passive loading gear 5.

7. honing wheel tooth top and tooth root circular cone vertex of a cone half-angle

Honing wheel tooth top and tooth root should be the hyperboloid of one sheet in theory, adopt taper seat to substitute for ease of processing.

Tip cone vertex of a cone half-angle ${\mathrm{\&delta;}}_e={\mathrm{tg}}^{-1}\left[\frac{R_e-\sqrt{{(\sqrt{{R_e}^2-{R_b}^2}-B_0\mathrm{Sin\&psi;})}^2+{R_b}^2}}{B_0}\right]$

Tooth root circular cone vertex of a cone half-angle ${\mathrm{\&delta;}}_i={\mathrm{tg}}^{-1}\left[\frac{\sqrt{{(\sqrt{{R_i}^2-{R_b}^2}-B_0\mathrm{Sin\&psi;})}^2+{R_b}^2}-R_i}{B_0}\right]$

In the formula, R_e. the tip circle radius of honing wheel, R_i. the root radius of honing wheel, R_b. the base radius of honing wheel, B₀. the honing wheel facewidth.

More than calculate and be as the criterion with the honing wheel intermediate cross-section.

The first honing wheel 3 and the second honing wheel 4 adopt open-ended alumina abrasive, resinoid bond to make gear-like honing wheel (profile is more as pinion cutter), working face still is involute helicoid, adopt the diamond coatings high accuracy roller finishing most convenient with processed gear identical (tooth depth, the facewidth should strengthen), as adopt hardened steel to make honing wheel, working flank is through the gear grinder accurate grinding, and coating surface CBN (cubic boronnitride) also can.

Embodiment

Consult Fig. 5, the lathe of external-gearing honing cylindrical gear of the present invention is a kind of special purpose machine tool, minute horizontal and vertical two kinds of structures. Present embodiment is described to be to belong to a kind of in the horizontal type structure, and namely the first honing axle II in the lathe of external-gearing honing cylindrical gear and the second honing axle III are parallel to each other, take with the face horizontal plane angle as

The orientation be installed on the casing 10. Workpiece spindle I is between the first honing axle II and the second honing axle III, flatly is installed on the casing 10, so, workpiece spindle I and the first honing axle II, the second honing axle III Special composition intersecting axle, angle is

Horizontally disposed workpiece spindle I left end is installed processed gear 1 (diamond dressing wheel is installed during finishing), and right-hand member is installed and initiatively loaded gear 2, and gear 2 can move axially the purpose that reaches load or unload along feather key 9. Slip ring 7 is used for eliminating the feather key gap with screw 8, and slip ring 7 is connected with the output shaft of motor 11. Motor shaft will overlap with the axis of workpiece spindle I. Motor 11 is by being fixedly mounted on screw rod 13, nut 14 and slide plate 12 in the base on the lathe bed 15 and finishing motor 11 and initiatively load the axial displacement of gear 2. Also represented among the figure with the workpiece spindle I angle of cut to be

The first honing wheel shaft II, its left end is installed the first honing wheel 3, right-hand member is installed No. 1 passive loading gear 5. (the second honing axle III, the second honing wheel 4 and No. 2 passive loading gears 6 take to remove omissive representation). Above structure technical scheme according to the invention.

Processed gear: m_n＝4mm、α _n＝20°、Z ₁=50, β=10 ° (dextrorotation), b=30mm,

 

	m n  (mm)	α n (°)	Z 1	B   (mm)	β 1(°)	β b1(。)	m t      (mm)	α t(°)	p n(mm)	R b      (mm)	R 1      (mm)
												Machining gears (wheel 1)	4	20	50	30	10 (right sides)	(9.391 the right side)	4.062	20.284	11.809	95.252	101.55
	m n2 (mm)	α n2(°)	Z 2	B 2  (mm)	β 2(°)	β b2(°)	m 2      (mm)	α 2(°)	p n2(mm)	R b2     (mm)	R 2      (mm)
												Initiatively load gear (wheel 2)	4.007	20.283	50	50	0.594	0.50	4.007	20.284	11.808	95.252	100.175
	m n3 (mm)	α n3(°)	Z 3	B 3  (mm)	β 3(°)	β b3(°)	m 3      (mm)	α 3(°)	p n3(mm)	R b3     (mm)	R 3      (mm)
												Honing wheel (wheel 3)	4	20	63	40	5.97	(5.609 the right side)	4.022	20.1	11.809	118.977	126.693
	m n4 (mm)	α n4(°)	Z 4	B   (mm)	β 4(°)	β b4(°)	M 4      (mm)	α 4(°)	p n4(mm)	R b4     (mm)	R 4      (mm)
												Honing wheel (wheel 4)	4	20	57	40	26.07	(24.391 a left side)	4.392	22.508	11.809	116.01	125.172
	m n5 (mm)	α n5(°)	Z 5	B   (mm)	β 5(°)	β b5(°)	m 5      (mm)	α 5(°)	p n5(mm)	R b5     (mm)	R 5      (mm)
												Passive loading gear (wheel 5)	4.007	20.283	63	40	15.482	(14.5 a left side)	4.158	20.98	11.808	118.977	130.977

 

	m n6 (mm)	α n6(°)	Z 6	B   (mm)	β 6(°)	β b6(°)	m 6      (mm)	α 6(°)	p n6(mm)	R b6     (mm)	R 6      (mm)
												Passive loading gear (wheel 6)	4.007	20.283	57	40	15.482	(14.5 the right side)	4.158	20.98	11.808	116.01	118.503

Centre-to-centre spacing A₁＝R _b1+R _b3＝214.229(mm)

      A ₂＝R _b1+R _b4＝211.262(mm)

Adopt the method for the lathe fine finishining roller gear of two honing wheel external-gearing honing cylindrical gears:

1. debug lathe and finishing honing wheel

1) unclamps the second honing axle III upward with hard-wired the second honing wheel 4 of elastic ring, left end at workpiece spindle I is installed diamond dressing wheel, rotate the second honing axle III and make diamond dressing wheel and the first honing wheel 3, make No. 1 passive loading gear 5 and initiatively load gear 2, the crack that all disappears between the flank of tooth that initiatively loads gear 2 and No. 2 passive loading gears 6 is contacted, rotate again the gap that the second honing wheel 4 eliminates with diamond dressing wheel and then tighten up the second honing wheel 4;

2) start lathe and make and initiatively load gear 2 and move axially load trim the first honing wheel 3 and the second honing wheel 4, repair completely, unloading is also shut down, and unloads diamond dressing wheel.

2. the processed gear of honing

1) processed gear 1 is installed in the left end of axle I, its end face is close to, then move axially and initiatively load gear 2, (do not tighten up because of processed gear this moment to be loaded on the processed gear 1 bilateral flank of tooth and the first honing wheel 3 and the second honing wheel 4 even contact, the permission rotation is adjusted, it is impartial to reach the gear teeth two lateral tooth flank honing surpluses), tighten up processed gear 1;

2) adjust lathe and determine the honing speed v₀

By formula

Adjust,

In the formula: R_b0. honing wheel base radius, ω₀. honing wheel angle of revolution speed, β_b1. processed rolling circle helical angle, ψ. desirable 10 °-15 °; Described honing wheel base radius R_b0With honing wheel angle of revolution speed omega₀Choose, as the base radius R of the first honing wheel_b3Equal the base radius R of the second honing wheel_b4The time, minute two kinds of situations, 1) R_b3＝R _b4＝R _b1，ω ₃＝ω ₄＝ω ₁，2)R _b3＝R _b4≠R _b1，ω ₃＝ω ₄≠ω ₁ Base radius R when the first honing wheel_b3The base radius R that is not equal to the second honing wheel_b4The time, minute three kinds of situations, 1) R_b1≠R _b3≠R _b4The time, ω₁≠ω ₃≠ω ₄，2)R _b3≠R _b4，R _b1＝R _b3The time, ω₃≠ω ₄，ω ₁＝ω ₃，3)R _b3≠R _b4，R _b1＝R _b4The time, ω₃≠ω ₄，ω ₁＝ω ₄, wherein, ω₁. the angle of revolution speed of processed gear, ω₃. the angle of revolution speed of the first honing wheel, ω₄. the angle of revolution speed of the second honing wheel, R_b1. the base radius of processed gear, R_b3. the base radius of the first honing wheel, R_b4. the base radius of the second honing wheel.

3) then start shooting, load until remove the honing surplus, manufactured processed gear 1 is shut down and is unloaded in unloading thereupon, enters the next working cycles that repeats above-mentioned steps.

Claims (6)

1. the lathe of an external-gearing honing cylindrical gear includes casing (10), motor (11), the first honing wheel (3), the second honing wheel (4), initiatively loads gear (2), No. 1 passive loading gear (5), No. 2 passive loading gears (6), workpiece spindle (I), the first honing axle (II) and the second honing axle (III); The first honing axle (II) is parallel with the second honing axle (III), and by the bearing level or vertically be installed on the casing (10), wheelbase is A=A₁+A ₂Workpiece spindle (I) is between the first honing axle (II), the second honing axle (III), and and the first honing axle (II), second honing axle (III) the space angle of cut be ψ, the projection line of workpiece spindle (I) on the first honing axle (II) and the determined plane of the second honing axle (III) and the first honing axle (II), the second honing axle (III) are parallel, and the between centers beeline of workpiece spindle (I) and the first honing axle (II), the second honing axle (III) is respectively A₁、A ₂，A ₁And A₂Equate or do not wait; The first honing wheel (3), the second honing wheel (4) is fixedly mounted on respectively the first honing axle (II), the left end of the second honing axle (III), initiatively load gear (2), No. 1 passive loading gear (5), No. 2 passive loading gears (6) are installed in respectively workpiece spindle (I), the first honing axle (II), the right-hand member of the second honing axle (III), the left end of workpiece spindle (I) is used for installing processed gear (1), processed gear (1) and the first honing wheel (3), the second honing wheel (4) is meshed, initiatively load gear (2) and No. 1 passive loading gear (5), No. 2 passive loading gears (6) are meshed, and 13 region of engagements (a) have been consisted of, 14 region of engagements (b), 25 region of engagements (c), 26 region of engagements (d), the end that the first honing axle (II) of No. 1 passive loading gear (5) is installed, the end of the second honing axle (III) of No. 2 passive loading gears (6) or the end of workpiece spindle (I) are installed are connected 11 with motor) connect; It is characterized in that, described the first honing wheel (3), the second honing wheel (4), No. 1 passive loading gear (5) are angular wheel with No. 2 passive loading gears (6), the small end of the small end of the first honing wheel (3), the second honing wheel (4) and No. 1 passive loading gear (5), No. 2 passive loading gears (6) relatively is installed in the two ends of the first honing axle (II), the second honing axle (III), and honing wheel tooth top and tooth root circular cone vertex of a cone half-angle are:

Tip cone vertex of a cone half-angle ${\mathrm{\&delta;}}_e={\mathrm{tg}}^{-1}\left[\frac{R_e-\sqrt{{(\sqrt{{R_e}^2-{R_b}^2}-B_0\mathrm{Sin\&psi;})}^2+{R_b}^2}}{B_0}\right]$

Tooth root circular cone vertex of a cone half-angle ${\mathrm{\&delta;}}_i={\mathrm{tg}}^{-1}\left[\frac{\sqrt{{(\sqrt{{R_i}^2-{R_b}^2}+B_0\mathrm{Sin\&psi;})}^2+{R_b}^2}-R_i}{B_0}\right]$

In the formula, R_e. the tip circle radius of honing wheel, R_i. the root radius of honing wheel, R_b. the base radius of honing wheel, B₀. the honing wheel facewidth;

What initiatively load gear (2) employing is that what namely adopt is that the gear teeth two lateral tooth flanks are respectively the opposite spiral involute surface of rotation direction along the spur gear of gear width for the change transverse tooth thickness, and this initiatively loads the Base spiral angle β of gear_b2=0.5 °～1 °, No. 1 passive loading gear (5) that is meshed with it, the helical angle of No. 2 passive loading gears (6) are respectively left-handed or dextrorotation, and size equals ψ-β_b2；

Processed gear (1) with initiatively load gear (2), the first honing wheel (3) and No. 1 passive loading gear (5), the relation between the second honing wheel (4) and No. 2 passive loading gears (6) is: Z₁＝Z ₂、R _b1＝R _b2，Z ₃＝Z ₅、R _b3＝R _b5，Z ₄＝Z ₆、R _b4＝R _b6，A ₁＝R _b1+R _b3＝R _b2+R _b5，A ₂＝R _b1+R _b4＝R _b2+R _b6，β _b3＝ψ±β _b1、

β _b5＝ψ±β _b2、

Wherein: Z₁. the number of teeth of processed gear, Z₂. initiatively load the number of teeth of gear, Z₃. the number of teeth of the first honing wheel, Z₄. the number of teeth of the second honing wheel, Z₅.1 the number of teeth of number passive loading gear, Z₆.2 the number of teeth of number passive loading gear, R_b1. the base radius of processed gear, R_b2. initiatively load the base radius of gear, R_b3. the base radius of the first honing wheel, R_b4. the base radius of the second honing wheel, R_b5.1 the base radius of number passive loading gear, R_b6.2 the base radius of number passive loading gear, β_b1. the Base spiral angle of processed gear, β_b2. initiatively load the Base spiral angle of gear, β_b3. the Base spiral angle of the first honing wheel, β_b4. the Base spiral angle of the second honing wheel, β_b5.1 the Base spiral angle of number passive loading gear, β_b6.2 the Base spiral angle of number passive loading gear.

2. according to the lathe of external-gearing honing cylindrical gear claimed in claim 1, it is characterized in that the described wheelbase that is parallel to each other is A=A₁+A ₂The first honing axle (II) and the second honing axle (III), to be installed on the casing (10) with the orientation of horizontal plane angle as ψ, the workpiece spindle (I) that is between the first honing axle (II) and the second honing axle (III) flatly is installed on the casing (10) by bearing, the projection line of workpiece spindle (I) on the first honing axle (II) and the determined plane of the second honing axle (III) and the first honing axle (II), the second honing axle (III) are parallel, and the between centers beeline of workpiece spindle (I) and the first honing axle (II), the second honing axle (III) is respectively A₁、A ₂，A ₁And A₂Equate or do not wait.

3. according to the lathe of external-gearing honing cylindrical gear claimed in claim 1, it is characterized in that, the described gear (2) that initiatively loads is slidingly connected at axle head with slip ring (7) by means of feather key (9), slip ring (7) with initiatively load gear (2) right side and contact, initiatively load gear (2) and slip ring (7) endoporus featherway and be close to and tighten up with screw (8) with feather key (9) both sides working face respectively;

Described the second honing wheel (4) is to adopt the conical surface elastic ring of can circumference adjusting phase place to be fixedly connected on the left end of the second honing axle (III).

4. according to the lathe of external-gearing honing cylindrical gear claimed in claim 3, it is characterized in that, described the first honing wheel (3) adopts alumina abrasive, the resinoid bond that can repair to make with the second honing wheel (4), gear teeth working face is involute helicoid, perhaps adopt hardened steel to make the first honing wheel (3) and the second honing wheel (4), gear teeth working flank is for adopting the coating surface CBN behind the gear grinder accurate grinding.

5. adopt the method for the lathe fine finishining roller gear of external-gearing honing cylindrical gear claimed in claim 1, it is characterized in that described method may further comprise the steps:

1) debugging lathe and finishing honing wheel

(1) unclamps the second honing axle (III) upward with hard-wired the second honing wheel of elastic ring (4), left end at workpiece spindle (I) is installed diamond dressing wheel, rotate the second honing axle (III) and make diamond dressing wheel and the first honing wheel (3), make No. 1 passive loading gear (5) and initiatively load gear (2), the crack that all disappears between the flank of tooth that initiatively loads gear (2) and No. 2 passive loading gears (6) is contacted, rotate again the gap that the second honing wheel (4) eliminates with diamond dressing wheel and then tighten up the second honing wheel (4);

(2) start lathe and making and initiatively load gear (2) and move axially load trim the first honing wheel (3) and the second honing wheel (4), repair completely, unloading is shutdown also, unloads diamond dressing wheel;

2) the processed gear of honing

(1) processed gear (1) is installed in the left end of workpiece spindle (I), the shaft shoulder of its end face and workpiece spindle (I) is close to, then move axially and initiatively load gear (2) and load, make processed gear (1) the bilateral flank of tooth and the first honing wheel (3) and be connected honing wheel (4) contact and be connected, namely reach processed gear (1) two lateral tooth flank honing surplus state of equalization, fastening processed gear (1);

(2) adjust lathe and determine the honing speed v₀

By formula $v_0=\frac{R_{b0}{\mathrm{\&omega;}}_0}{\cos {\mathrm{\&beta;}}_{b1}}\sin \mathrm{\&psi;}$ Adjust,

In the formula: R_b0. honing wheel base radius, ω₀. honing wheel angle of revolution speed, β_b1. processed rolling circle helical angle, ψ. get 10 °-15 °;

(3) then start shooting, load until remove the honing surplus, manufactured processed gear (1) is shut down and is unloaded in unloading thereupon, enters the next working cycles that repeats above-mentioned steps.

6. according to the method for the lathe fine finishining roller gear of employing claimed in claim 5 external-gearing honing cylindrical gear claimed in claim 1, it is characterized in that described honing wheel base radius R_b0With honing wheel angle of revolution speed omega₀Choose, as the base radius R of the first honing wheel_b3Equal the base radius R of the second honing wheel_b4The time, i.e. R_b3＝R _b4The time, ω₃＝ω ₄, wherein, ω₃. the angle of revolution speed of the first honing wheel, ω₄. the angle of revolution speed of the second honing wheel;

Base radius R when the first honing wheel_b3The base radius R that is not equal to the second honing wheel_b4The time, i.e. R_b3≠R _b4The time, ω₃≠ω ₄。

Images